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UNITED STATE-s PATENT OFFICE.

ROBERT W. DAVIS,OF ELMIRA, NEWv YORK, ASSIGNOR TO DAVIS IRON WAGONCOMPANY, OF SAME PLAGE.

WHlFFLETREE A'ND DOUBLE-TREE.

SPECIFICATION forming part of Letters Patent No. 236,993, dated January25, 1881.

Application led November 30, 1880. (No model.)

To all whom it may concern:

Be it known that I, ROBERT W. DAVIS, of Elmira, in the county ofChemung'and State of New York, have invented certain new and usefulImprovements in W hifietrees and Double-Trees, of which the following is-a specili-` cation.

The object of my invention is to provide strong and light metalwhiiietrees and double-trees or eveners, which may be made by bendingcommon iron or steel rods.

To this end the invention consists in a whit'- lietree or double-treecomposed of an iron or steel rod, the end portions of which are bentbackward. upon the middle portion and brought together at about themiddle of the length of the whifiletree or double-tree,so as to formeyes or loops at the ends of the whiiletree or double-tree, and anarched middle portion, and a metal band surrounding the whiftletree ordouble-tree at the meeting ends of the rod, and preferably having in ita hole for the reception of a draft bolt or pin. I also employ a novelform of brace inserted in the arched middle portion of the whifiletreelor doubletree, and secured therein by the middle or center band, and byaband on each side thereof which surrounds the whiftletree ordouble-tree at the ends of said brace.

It also consists in a novel means of securing the brace and the sidebands against longitudinal movement upon the Whiffletree or double-tree.

In the accompanying drawings, Figure 1 represents a plan of adouble-tree or evener and two whiftletrees connected thereto, and allVembodying my invention, the bands upon the double-tree being in section,for the purpose of better illustrating my invention. Fig. 2 representsan end view of the end eye of the double-tree, showin g attached theretoa clevis whereby a whifiietree is connected. Fig. 3 represents atransverse section of the doubletree uponthedotted line w Fig. 1; andFig. et represents a similar section upon the dotted line y y, Fig. l.

Similar letters of reference designate corre` sponding parts in all thefigures.

The double-tree is formed of a single rod of iron or steel, of round orother transverse section, and about twice the length of the double-tree.The middle portion of this rod is left straight, so as to form the backof the doubletree, and the end portions are bentbackward upon the middleportion, forming an eye or loop, a, at each end, and an arched middleportion, A, the two ends of the rod meeting, preferably, at about thelength of the doubletree. The arched front of the middle portion greatlyincreases the strength of the doubletree, as the two end portions of therod act as braces to prevent the bending of the straight back of thedouble tree.

The two meeting ends of the doubletree might be welded together; butthis is not necessary, as the central portion of the doubletree issurrounded by a metal band, B, which may be of malleable iron, and whichcovers the meeting ends of the rod. This band serves to keep the twoportions of the rod from which the double-tree is formed in properrelation to each other, and preferably has through it a hole, b, for thereception of a draft pin or bolt.

In order to still further strengthen the doubletree and resist any forcewhich tends to bend it, I preferably insert between the portions of therod forming the back and front of the double-tree a curved or archedbrace, O, the middle portion of which bears upon the middle portion ofthe front of the double-tree, and which is bent or curved back, so thatthe ends press against the back of the double-tree and are concealed byside bands, D, which surround the double-tree at each side of the middleband, B.

In order to hold the curved brace C and the bands D in proper position,I preferablyinsert pins or rivets c through said bands, and the ends ofthe brace G are curved or bent at d, so as to bear upon the said pins orrivets.

Owing to the widening of the double-tree toward the middle the ba-nds Dcannot approach each other, and the bent or hooked ends of the brace Cprevent their moving away from each other.

The two whietrees are each composed of a single rod, bent so as to forman arched middle portion, A, and end eyes, a, exactly like thedoubletree, and the arrangement of the brace C and the bands D D,together with the l pins or rivets c, are all exactly similar to the ldouble-tree just described. Each of the eyes 5 or loops a of thedouble-tree receives a clevis, l e, iu which a Whitletree is pivoted bya bolt, f, passing through said clevis and through the l middle band, B,of the whitetree. The end eyes or loops, a, ot' the Whiletrees receivetrace-hooks g of any suitable character. By my invention I provide formaking very strong and simple double-trees and Whittle trees cheaply,and without forging, by simply 1 heating a steel rod and bending it intothe r 5 form required.

What I claim as my invention, and desire to secure b v Letters Patent,is-

1. A Whiletree or doubletree composed of t a metal rod, the endportionsot' which are bent 2o backward upon the middle portion andbrought together at about the middle of the length of the Whifdetree ordouble-tree, forming.,lr eyes or l.

loops at the ends thereof, and an arched middle portion, and ametal bandsurrounding the whifletree or double-tree at the meeting ends 25 oftherod, substantially as specified.

2. A whifetree or double-tree composed of a metal rod bent to form anarched middle portion, A, and eyes or loops a, an arched brace C, andthe center band, B, and side 3o bauds, D, surrounding the whftletree ordouble-tree, substantially as speciiied.

3. A whiletree or double-tree composed of a metal rod bent to form auarched middle portion, A, and eyes or loops a, au arched 3 5 brace, C,with curved ends d, the center baud, B, the side bands, D, and therivets or pins c, inserted through said bands and bearing upon thecurved ends d ot' the brace C, substantially as specified.

ROBERT W. DAVIS. Witnesses:

S. T. REYNOLDS, DANIEL DAVIS.

